Nurse Maritza Perez gives a COVID-19 test in Anaheim, California, in July 9. Photo: Allen J. Schaben/Los Angeles Times via Getty Images

The number of U.S. coronavirus cases exceeded 4 million on Thursday, Johns Hopkins data illustrates.

Why it matters: President Trump is pushing to reopen schools and return the U.S. economy to pre-pandemic normalcy. But infection numbers are rising and coronavirus hospitalizations have surged nationwide, adding to the pressure of a health care system that's been under immense strain for months. More than 143,000 Americans have died to date from COVID-19.

Go deeper: In photos: Life in the era of the coronavirus pandemic

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Updated 7 hours ago - Health

World coronavirus updates

Data: The Center for Systems Science and Engineering at Johns Hopkins; Map: Axios Visuals

New Zealand confirmed Thursday there are 13 local cases linked to the four who tested positive for COVID-19, ending 102 days of no community spread. Auckland locked down Wednesday for 72 hours and the rest of NZ is under lesser restrictions.

By the numbers: Over 751,000 people have died of the novel coronavirus globally and another 20.7 million have tested positive, per Johns Hopkins. More than 12.8 million have recovered from the virus.

Biden calls for 3-month national mask mandate: "Be a patriot"

Joe Biden called on governors to issue a three-month mandatory outdoor mask mandate on Thursday, telling reporters after receiving a coronavirus briefing that experts say it could save over 40,000 lives.

Why it matters: Biden was more aggressive and specific than he has been in previous calls to wear a mask, arguing that it will allow children to return to school sooner, businesses to reopen and help "get our country back on track."

22 hours ago - Health

Coronavirus cases are falling, but don't get too comfortable

Data: The COVID Tracking Project, state health departments; Map: Andrew Witherspoon, Danielle Alberti, Sara Wise/Axios

America's coronavirus outbreak is slowing down after a summer of explosive growth.

By the numbers: The U.S. is averaging roughly 52,000 new cases per day — still a lot of cases, but about 10.5% fewer than it was averaging last week.